Question: What was Donald Tusk's position that was replaced by Herman Van Rompuy?
Paraphrase: What was Donald Tusk's position before he was replaced by Herman Van Rompuy ?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q946 p:P39 ?s . ?s ps:P39 ?obj . ?s pq:P1365 wd:Q12983 }